JP2000232747A - Motor, manufacture of stator for the motor, and fixing solution application device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a motor provided with an inexpensive high-performance stator constituted by putting wound coils forming wound coil sections on bobbins on the tooth sections of a laminated stator core and fixing the wound coil sections by applying the necessary minimum amount of fixing solution, a method for manufacturing stator for motor, and a fixing solution application device. SOLUTION: A motor is provided with a stator 6, which is constituted in such a way that bobbins 13 each having a wound coil section 15 formed by winding an electric wire are respectively put on a plurality of radial tooth sections, formed on a laminated stator core and infiltrating a fixing solution through each wound coil section 15 over the entire periphery by injecting a desired amount of fixing solution into the section 15 from a plurality of spots, along the longer side of the rectangular wound coil section 15 through an injecting section 14 formed on the outer peripheral side of each bobbin 13, and then the coil section 15 is fixed by curing the fixing solution and a rotor which is rotatably supported in the stator 6.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric motor having a stator in which a winding coil formed by winding an electric wire continuously around a bobbin to form a winding coil portion is inserted into the teeth of a stator core. The present invention relates to a method for manufacturing a stator for an electric motor and an apparatus for applying a fixing solution.

[0002]

2. Description of the Related Art Generally, a stator of a rotary electric motor is provided with a slot formed between circumferentially arranged teeth of a stator core, a coil disposed therein, and an insulator for insulating the core from the coil. Is formed from. An immersion impregnation method of immersing the entire stator in an immersion tank filled with a large amount of a fixing solution and then impregnating the immersion tank after assembling the constituent components is used. As another method, there is a simple dropping method in which a fixed amount of a fixing solution is simply applied to a stator.

[0003] As for the equipment related to the former, the former hooks the stator body on a conveyor or the like and fixes it. Then, after the impregnating tank is impregnated for a certain period of time, excess fixing liquid is naturally removed while being conveyed, and then conveyed and dried and fixed on a drying facility or the like in the next step.

[0004] In the latter, after the fixing liquid is applied to the entire stator manually or by a general-purpose coating device, excess fixing liquid is similarly removed and dried and fixed.

[0005]

Conventionally, in the above-described immersion impregnation method and the simple dropping method, a large amount of a fixing liquid is used, and since a fixing liquid having a property of sticking in a standing state is generally used, it is difficult to use the fixing liquid every day. Inspection work is important, and management equipment such as liquid circulation and forced cooling is required. Furthermore, since it takes time to remove the excess fixing liquid, the production is performed in a predetermined quantity unit, and the mass productivity is poor. In addition, it is impossible to completely recover the removed fixing liquid, and the excessive amount of the fixing liquid is consumed. Therefore, a large amount of man-hours are required for maintenance work for removing the fixed and unfixed liquid. .
Further, a predetermined quantity must be processed by a series of flow operations, and a plurality of batch processes are required, so that the equipment itself becomes large-sized, and the equipment area is required to be large.

[0006] An object of the present invention is to solve the above problems.
An inexpensive and high-performance structure in which a wound coil having a wound coil portion formed on a bobbin is inserted into a tooth portion of a stator laminated iron core, and the wound coil portion is applied and fixed with a minimum necessary fixing liquid agent. An object of the present invention is to provide an electric motor having a stator. Also,
Another object of the present invention is to make it possible to manufacture an inexpensive and high-performance motor stator by eliminating the excess of the fixing liquid material, simplifying the application of the fixing liquid material, improving the efficiency, and improving the efficiency. An object of the present invention is to provide a method for manufacturing a stator for an electric motor.

Still another object of the present invention is to provide a small-sized and inexpensive fixing liquid applying apparatus which reduces the amount of fixing liquid used and improves facility maintenance.

[0008]

In order to achieve the above object, the present invention provides an electric wire winding (aligned winding) on each of a plurality of teeth radially formed on a stator laminated iron core. Each of the bobbins forming the wound coil portion is inserted, and a desired amount of a fixing liquid agent is injected from an injection portion formed on the outer peripheral side of each bobbin, and penetrates the entire circumference of each wound coil portion, An electric motor comprising: a stator configured by fixing each wound coil portion by curing a fixing liquid agent; and a rotor rotatably supported in the stator. In addition, the present invention inserts each of the bobbins formed by winding an electric wire (aligned winding) to form a wound coil portion on each of a plurality of tooth portions radially formed on the stator laminated iron core, A desired amount of a fixing liquid is injected from an injection portion formed on the outer peripheral side of each bobbin, and penetrates the entire circumference of each wound coil unit, and the fixing liquid is cured to fix each wound coil unit. A stator, a rotor rotatably supported in the stator, an outer frame for supporting an outer periphery of the stator, and a bearing for rotatably supporting the rotor; And a holding member attached to the motor.

[0009] The present invention also provides a bobbin in which a wire is wound (aligned winding) to form a wound coil portion in each of a plurality of tooth portions radially formed on a stator laminated iron core. A desired amount of the fixing liquid material is injected from a plurality of locations along the rectangular long side of the wound coil portion through an injection portion formed on the outer peripheral side of each bobbin, so that the fixing liquid material is And a stator configured by fixing each wound coil portion by curing the fixing liquid agent, and a rotor rotatably supported in the stator. Motor. In addition, the present invention inserts each of the bobbins formed by winding an electric wire (aligned winding) to form a wound coil portion on each of a plurality of tooth portions radially formed on the stator laminated iron core, By injecting a desired amount of fixing liquid agent from a plurality of locations along the long side of the rectangular shape of the wound coil portion through an injection portion formed on the outer peripheral side of each bobbin, the fixing liquid material is spread over the entire circumference of each wound coil portion. Permeate, a stator configured by fixing each wound coil portion by curing the fixing liquid agent, a rotor rotatably supported in the stator, and an outer frame that supports the outer periphery of the stator, An electric motor comprising: a bearing rotatably supporting the rotor; and a holding member attached to the outer frame or the stator.

Further, the present invention is characterized in that the stator in the electric motor is further formed by fitting a core back portion formed by laminating the outer periphery of the tooth portion of the stator laminated iron core. That is, the structure of the stator in the rotary electric motor according to the present invention is divided into a tooth portion having a plurality of teeth on the inner peripheral portion and a core back portion forming the outer peripheral portion. It is made up of the required number of laminated parts by stamping the material from the hoop material. Furthermore, in order to generate an electric field in the tooth portion, a winding coil in which an electric wire is wound a required number of times around an insulator called a bobbin is radially inserted and configured.

Further, the present invention provides a winding in which a winding coil portion is formed by winding an electric wire around each bobbin (aligned winding) on each of a plurality of tooth portions radially formed on a stator laminated iron core. A bobbin extending over a plurality of wound coils inserted into each of the plurality of tooth portions of the stator laminated core in the wound coil inserting step of inserting each of the coils; A fixing liquid application step of injecting a desired amount of the fixing liquid through an injection portion formed on an outer peripheral side of the winding liquid section to repeatedly apply the fixing liquid throughout the entire circumference of each wound coil portion; and the fixing liquid applying step A heating step of heating and fixing a fixing liquid applied over a plurality of wound coils inserted into the tooth portions of the stator laminated iron core to obtain a stator, thereby obtaining a stator. This is a method of manufacturing a child.
Further, the present invention provides a wound coil in which a wound coil portion is formed by winding (aligning winding) an electric wire around each bobbin on each of a plurality of tooth portions radially formed on a stator laminated iron core. And the outer circumferential side of each bobbin over a plurality of wound coils inserted into each of the plurality of tooth portions of the stator laminated iron core in the wound coil inserting step. Fixation by injecting a desired amount of the fixing liquid agent from a plurality of locations along the rectangular long side of each wound coil portion through the injection portion formed in the above, so that the fixing liquid material permeates over the entire circumference of each wound coil portion. A liquid applying step, and a curing step of heating and fixing the fixing liquid applied over a plurality of wound coils inserted into the teeth of the stator laminated iron core in the fixing liquid applying step to obtain a stator. Method for manufacturing stator for electric motor characterized by having It is.

Further, the present invention provides a winding in which an electric wire is wound around each bobbin (aligned winding) to form a wound coil portion on each of a plurality of teeth radially formed on the stator laminated iron core. A wound coil inserting step of inserting each of the coils, and a stator laminated iron core having a plurality of wound coils inserted in the wound coil inserting step is rotatably supported about an axis, and fixed. The child laminated iron core is rotated and stepped about the axis thereof in accordance with the pitch of the wound coil, and the wound coil is passed through the injection portion formed on the outer peripheral side of the bobbin with respect to the wound coil that has been rotated and stepped. A fixing liquid agent application step of injecting a desired amount of the fixing liquid agent from a plurality of locations along the rectangular long side of the portion to allow the fixing liquid agent to penetrate the entire circumference of the wound coil portion; Coated over multiple wound coils inserted in laminated core Is a manufacturing method of an electric machine stator, characterized in that heated and cured and a curing step of obtaining a stator of Chakuekizai. Further, the present invention is characterized in that the method for manufacturing a stator for an electric motor further includes a fitting step of fitting a core back portion laminated on the outer periphery of the stator obtained in the curing step. Also, the present invention is characterized in that, in the fixing liquid applying step of the method for manufacturing a stator for an electric motor, the fixing liquid is injected using a discharge nozzle.

Further, according to the present invention, in the fixing liquid applying step of the method for manufacturing a stator for an electric motor, a moving table for rotatably supporting a stator laminated iron core about an axis is reciprocated in an axial direction. Thus, the stator laminated iron core having a plurality of wound coils inserted therein is rotated and stepped around the axis in accordance with the pitch of the wound coils. Further, the present invention provides a support member for supporting a stator laminated iron core having a plurality of wound coils inserted therein so as to be rotatable about an axis, and a stator laminated iron core supported by the support member being disposed about the axis. Rotating step means for rotating and rotating the coil in accordance with the pitch of the winding coil, and winding the coil wound by the rotating step means through an injection portion formed on the outer peripheral side of the bobbin. A fixing liquid application means for injecting a desired amount of the fixing liquid from a plurality of locations along the long side of the rectangular shape of the winding coil portion so as to penetrate the fixing liquid material over the entire circumference of the wound coil portion. This is an application device for a fixing liquid agent.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of a method for manufacturing a motor, a stator for the motor, and an apparatus for applying a fixing solution according to the present invention will be described with reference to the drawings. As shown in FIG. 11, the electric motor according to the present invention covers an inner rotor type stator (stator) 101, an outer frame 114 that supports the outside of the stator 101, and covers the ends of the coils on both sides of the outer frame 114. Holding members (end brackets) 112 and 113 which are mounted as described above, and are rotatably supported by bearings 115 provided on at least the pair of holding portions, and are rotatable with a desired gap with respect to the outer diameter of the stator. And a cylindrical rotor (rotor) 110 formed of a magnet or the like installed in the circumstance. 111 is
This is the shaft of the rotor 110. 116 is a controller. The holding members 112 and 113 are
Alternatively, it may be attached to any of the outer frames 114.

Next, an embodiment of an inner rotor type stator (stator) 101 will be described. Stator 101
Has a structure in which a teeth portion (stator core) 11 having a plurality of teeth 12 and a core back portion 106 forming an outer peripheral portion are divided as shown in FIG. The back portion 106 is formed by punching a raw material from the same band-shaped hoop material and laminating the necessary number. In the tooth portion 12 of the stator core 11, an electric wire wound around an insulator 13 called a bobbin by a necessary number to form a wound coil portion 15 is radially inserted and arranged. Then, the fixing liquid is uniformly penetrated between the wound coil electric wires (wound coil 15) without removing and inserting the wound coil portion 15 from the tooth portion 12 together with the bobbin 13, and the fixing liquid is heated and hardened. The winding coils 17 radially arranged are fixed to the teeth 12 of the stator core 11. Further, a stator (stator) 101 is formed by shrink-fitting the core back portion 106 on the combined product 105.

That is, the structure of the stator 101 in the rotary electric motor according to the present invention includes a teeth portion 11 having a plurality of teeth 12 on an inner peripheral portion and a core back portion 106 forming an outer peripheral portion.
As shown in FIG. 12, the stator core 11 and the core back portion 106 are formed by stamping a material from the same band-shaped hoop material and laminating a required number of components. Further, in order to generate an electric field, an electric wire is wound around the bobbin 13 a required number of times in order to generate an electric magnetic field. It is a thing. As described above, the electric motor according to the present invention generates a rotating magnetic field in the stator 101 by passing a current through each of the winding coil portions 15, and applies a secondary current to the rotor (rotor) 110 with the generated rotating magnetic field. This causes the rotor (rotor) 110 to rotate.

Next, an embodiment of a method and an apparatus for applying a fixing solution to a wound coil according to the present invention will be described with reference to FIGS.
This will be described with reference to FIG. FIG. 1 is a schematic view of an apparatus for applying a fixing liquid to a wound coil in an electric motor, FIG. 2 is an explanatory view showing a shape of a stator core combined with the wound coil, and FIG. FIG. 4 is an explanatory view showing a state in which a bobbin is combined with a stator core, and FIG. 5 is an explanatory view showing a location where coating is performed on a wound coil and a nozzle position of a coating device. FIG. 6, FIG. 7, FIG. 8, FIG.
FIG. 9 is an explanatory view showing a dropping position and a permeation flow of a fixing liquid agent, and FIG.
Is an explanatory view showing an operation principle of converting a linear operation into a rotational positioning operation, and FIG. 10 is a device configuration diagram for performing the operation.

The application of the fixing liquid agent to the wound coil section 15 according to the present invention is to satisfy the fixing with a small amount and eliminate the extra dropping step since the aim is to make the in-line by one-flow. Therefore, the bobbin shape is reviewed and fixed at the time of coating in order to allow the fixed liquid agent to uniformly penetrate between the wound coil wires 15 without having to insert and remove the wound coil 17 with the general-purpose coating device 7 capable of applying a small amount. That is, the arrangement of the child, the application location, the application direction, the application amount, the number of applications, and the like are determined. Furthermore, aiming at downsizing of coating equipment,
An object of the present invention is to reduce management man-hours by using a pressure vessel instead of a liquid material circulating and forcibly circulating equipment because a small amount of fixing liquid material is handled. In addition, in order to consider the maintainability in operation and further reduce the equipment cost, the positioning structure on the circumference of the stator 6 can convert the linear motion of the Y-axis moving table 3 into the rotation indexing motion. I made it. As shown in FIG. 9, the guide grooves 25a and 25b and the guide taper portions 24a and 24b which are equally divided into a required number of cylindrical parts are machined on the outer periphery. Rotational positioning is performed while indexing together with the operation.

Hereinafter, this specific embodiment will be described. First, the configuration of the fixing liquid application device will be described with reference to FIGS. The coating device main body 30 is X
・ It is a general-purpose device with software that can control three axes in the Y and Z directions with arbitrary setting values. The Y-axis moving table 2
The drive unit is controlled to move in the Y-axis direction on the base 1 and stop at, for example, three positions. Support part 3
Is mounted on the Y-axis moving table 2 and rotatably supports a stator mounting jig 27 having a stator chuck portion by a bearing 29. The rotation positioning shaft 4 is formed integrally with the stator mounting jig 27. Then, a hole for supporting the rotation positioning shaft 4 so as to be rotatable and slidable is formed, and the fixed guide pin portion 5 having the fixed guide pin 5a mounted thereon is fixedly mounted on the base 1. The coating device 7 having the discharge nozzle portion 7a is supported on an X-axis stage 31 that can be controlled to move in the X-axis direction with respect to a column 32 attached to the base 1 so as to be able to control the vertical movement (elevation) in the Z-axis direction. Have been. The fixed-quantity application controller 8 controls the supply of the fixed liquid from the pressure vessel 9 to the application device 7 so as to supply a desired constant amount. The pressure container 9 is configured to be supplied with air from an air supply unit 10.

According to such a configuration, after the stator 6 of the electric motor is attached to the stator chuck portion by the operator, the program is started in accordance with the program previously input by the start signal.
The fixed liquid agent is applied in a constant amount by the application device 7. At this time, the stator 6 moves in the Y-axis direction along with the movement of the Y-axis moving table 2 to apply the fixing liquid by the coating device 7 (the Y-axis operation of the coating device), and the cylindrical shape is used. The stator 6 of the electric motor is sequentially rotated stepwise at an angle of, for example, 30 [deg.] By the action of the rotation positioning shaft 4 and the fixed guide pin portion 5a in which a required number of equally divided grooves are formed on the outer periphery of the intermittent portion. Is operated continuously.

Further, the structure of the stator 6 of the electric motor, which is a target product of the present apparatus, is as follows. The material is punched from a band-shaped hoop material shown in FIG. Insulation (bobbin) to generate the indicated electric field
A winding coil 17 having a winding coil portion 15 formed by winding an electric wire around the cable 13 a required number of times is inserted and radially arranged. By providing a cutout (fixed liquid agent injection portion) 14 in the bobbin outer peripheral side wall portion 13a in this wound coil 17, a large number of wound coils 17 can be connected to the stator core 1
When assembled to the first tooth portion 12, the wound coil portion 15
It is characterized by a structure that can apply a fixing liquid agent to the surface. This cutout (injection portion) 14 was formed in one rectangular shape, but since the drop application of the fixing liquid is roughly determined,
It may be formed in a plurality of rectangular shapes. This assembled state is shown in FIG. That is, the notch (injection portion) 14 formed on the outer peripheral side of the bobbin 13 is for allowing the fixing liquid agent to be dripped (injected) and applied to the winding coil 15 from here. By the way, at this time, the winding coil portion 1 of the stator 6
Since the drop application (injection coating) of the fixing liquid agent to the surface 5 requires a receiving area, it is considered that a method of applying the fixing liquid agent horizontally and applying it from the long side of the wound coil 17 as shown in FIG. The coating portion 14a is formed by a cutout portion (injection portion) of the bobbin. The position of the application point 14 a is a position inclined by about 30 ° to 60 ° with respect to a horizontal plane passing through the axis of the stator 6. FIG. 3 shows the outer peripheral side wall 13a.
2 shows a wound coil 17 in which electric wires are aligned and wound on a bobbin 13 in which a cutout portion (portion for injecting a fixing liquid) 14 is formed to form a wound coil portion 15. 16 indicates each slot connection line.

Next, an embodiment of a method for applying the fixing solution will be described in detail. In the method of applying the fixing liquid, a predetermined amount of the fixing liquid is dropped by the coating device 7 at the above-described application position 14a into the first position 18a, the second position 18b, and the last position 18c. If the fixing liquid is applied in three places as described above,
It has been confirmed by an experiment that it flows and permeates the whole including the lower part of the wound coil portion. Even if the total application amount is substantially the same and the application is divided into four places and five places, the time can be increased somewhat. The permeation flow of the fixing liquid agent during this operation will be described with reference to FIGS. 6, 7, and 8. FIG.
When the liquid is ejected at the nozzle position 19a (corresponding to the initial position 18a) at the time of the initial application, the flow 20 of the fixing liquid agent becomes as shown in FIG. At this time, it flows and penetrates into the lower part of the wound coil portion (coil electric wire) 15 due to the capillary phenomenon. When discharged at the nozzle position 19b (corresponding to the second position 18b) at the time of the second application, the flow 21 of the fixing liquid and the flow 21a of the fixing liquid to the lower part of the coil electric wire 15 are as shown in FIG. At this time, the flow permeation further proceeds, and proceeds to about ／. Nozzle position 1 at the last application
When the ink is discharged at 9c (corresponding to the final rotation position 18c), the flow 22 of the fixing liquid agent becomes as shown in FIG. This discharge completes the application of the fixing liquid over substantially the entire circumference. In addition, the fixing liquid agent includes a main agent composed of an unsaturated polyester resin and styrene, a viscosity adjusting solvent composed of benzoyl peroxide and a solvent (a thinner type), and a curing agent.

Next, the principle of the rotation positioning operation of the present apparatus for sequentially rotating the application locations will be described. FIG. 9 is an explanatory diagram showing the principle of conversion, and FIG. 10 is a configuration diagram for performing the operation. The explanation of the principle based on this is based on the rotation positioning shaft 4 for the sake of simplicity, in contrast to the fact that the rotation positioning shaft 4 originally operates linearly and the guide pin 5a is fixed and serves as a reference. As shown in FIG. 9, according to the developed view 23 of the rotary positioning shaft, according to the developed view 23, the apparatus is linearly moved leftward in FIG. After that, it moves to the application start standby position), and the fixed guide pin 5
a reaches the tapered portion 24b which is separated and phase-shifted by, for example, 15 ° as shown by 26b. When the fixed guide pin 5a reaches the next linear groove 25b as indicated by 26c following the tapered portion 24b, the rotary positioning shaft 4 is rotated by 15 ° with respect to the fixed guide pin 5a. At this time, the rotation start position of the rotation positioning shaft 4 with respect to the fixed guide pin 5a is indicated by 26b, and the rotation completion position is indicated by 26c.

Next, the fixed guide pin 5a is separated and shifted to the taper portion 24a and the linear groove portion 25a having different phases by the linear movement in the right direction in FIG. The rotation positioning shaft 4 is further rotated by 15 ° in the same direction with reference to the guide pin 5a. Thus, the rotation positioning shaft 4 is rotated by a total of 30 ° (the stator 6 of the embodiment has 12 application points, and the rotation positioning angle is 30 ° per process). Angle conversion is possible. At this time, the fixed guide pin 5 of the rotary positioning shaft 4
The rotation start position with respect to a is 26d, and the rotation end position is 26
Indicated by e. Thereafter, when the rotation positioning shaft 4 moves linearly and the fixed guide pin 5a reaches the initial application position indicated by 26f, the fixing liquid is discharged from the discharge nozzle portion 7a of the application device 7 (the nozzle position 19a corresponding to the initial position 18a). Drop coating (injection coating) is performed, and the fixed guide pin 5a is 26 g
When the second application position is reached, the fixing liquid is applied dropwise (injection application) from the discharge nozzle portion 7a of the application device 7 (nozzle position 19b corresponding to the second position 18b), and the fixed guide pin 5a is moved for 26h. At the time of reaching the final application position indicated by, the fixing liquid agent is applied by dropping (injection application) from the discharge nozzle portion 7a (the nozzle position 19c corresponding to the final application position 18c) of the application device 7, and the cutout portion of the bobbin ( One-step coating operation to one wound coil portion (coil electric wire) 15 through the coating portion 14a formed by the injection portion 14 is completed. Note that the final application position indicated by 26h and 2
The origin return position indicated by 6a may be matched. That is, the stator 6 further chucked to the stator chuck portion of the stator mounting jig 27 from the final application position indicated by 26h is further moved leftward from the nozzle position 19c corresponding to the final application position 18c illustrated in FIG. This is because there is no need to move them.

As described above, when the Y-axis moving table 3 is reciprocated linearly in the Y-axis direction by the Y-axis driving source (not shown), the fixed guide pin 5a is fixed to the separated taper of the rotary positioning shaft 4. By moving back and forth between the portions 24a, 24b and the grooves 25a, 25b, the stator 6 is rotated stepwise at an angle of, for example, 30 °, so that the cut-out portion of the bobbin (injection portion) ) It becomes possible to apply the fixing liquid dropwise by the discharge nozzle portion 7a of the application device 7 through the application portion 14a formed by 14). One of the features is that a rotation fixed plunger 28 is added to improve the positioning accuracy in accordance with the conversion by the groove of the rotary positioning shaft 4. In other words, the rotation fixing plunger 28 is configured to always press the stator mounting jig 27 with a small force so that it is not rotated by friction. Therefore, the fixed guide pin 5a moves back and forth from the tapered portion 24b separated from the rotary positioning shaft 4 to the tapered portion 24a, and is chucked by the stator chuck portion of the stator mounting jig 27 integrated with the rotary positioning shaft 4. The stator 6 (the twelve wound coils 17 inserted into the twelve teeth portions 12 of the stator core 11) is adjusted to 30 pitches of the wound coils 17.
It is possible to perform rotational positioning stepwise at intervals of °.

As described above, the fixing liquid is applied dropwise to the twelve wound coils 17 constituting the stator 6 through the cutout portions (injection portions) 14. Thereafter, the stator 6 in which the fixing liquid is applied to all the wound coils 17 and impregnated is applied.
Is removed from the stator chuck portion of the stator mounting jig 27, and the removed stator 6 is mounted on an automatic drying device including a hot air circulation type drying furnace, and the fixing liquid is dried and cured by hot air. Thus, the stator 6 is completed. Next, as described above, the stator 1 is shrunk around the stator 6 so that
01 is completed.

As described above, the role of the fixing liquid is notch 1
Aiming only at the fixing of one wound coil portion (coil electric wire) 15 through 4, the following effects can be obtained. First, since the winding coil portion 15 is wound inside the bobbin 13, the exposed portion is small and is not easily damaged. Second,
Since there is no interphase cross portion in the wound coil portion, electromagnetic vibration is small.

Third, since the wound coil is wound in a manner aligned with the bobbin width, electric wire rubbing during operation is small. Fourth, because it is not an inserter method (distributed winding method),
No excessive external force is applied to the wires. In the embodiments of the method and the apparatus for applying the fixing liquid agent to the stator, the case of the inner rotor type stator (stator) has been described.
Can be applied to an outer rotor-type stator (stator) in which the wound coil 17 formed with is formed in a tooth portion formed on the stator core.

According to the above-described embodiment of the application of the fixing liquid agent to the stator, the application can be performed in a state where the coil wound around the stator core is arranged, and the minimum necessary for fixing the coil portion can be obtained. By realizing the product by the application of the coating liquid, the amount of the fixing liquid agent used and the number of coating steps can be reduced. Also,
According to the embodiment of the application of the fixing liquid agent to the stator, in order to realize the above reduction, it is possible to abolish management facilities such as circulation of the fixing liquid agent and forced cooling.

Further, according to the embodiment of applying the fixing liquid agent to the stator, the power for rotating and positioning the stator is also used for the existing operation, so that the equipment can be downsized and the equipment cost can be reduced. .

[0031]

According to the present invention, a wound coil having a wound coil portion formed on a bobbin is inserted into a tooth portion of a stator laminated iron core, and the wound coil portion is applied with a minimum necessary fixing solution. There is an effect that it is possible to realize an electric motor including an inexpensive and high-performance stator that is fixedly configured. Further, according to the present invention, it is possible to produce an inexpensive and high-performance electric motor stator by eliminating unnecessary fixing liquid material, simplifying the application of the fixing liquid material, improving efficiency, and improving efficiency. . Further, according to the present invention, it is possible to realize a small-sized and inexpensive fixing liquid application apparatus which reduces the amount of fixing liquid used and improves facility maintenance.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram showing an embodiment of an apparatus for applying a fixing liquid agent to a wound coil in an electric motor according to the present invention.

FIG. 2 is a perspective view showing a shape of a stator core combined with a wound coil according to the present invention.

FIG. 3 is a perspective view showing a bobbin shape having a cutout portion (injection portion) serving as a coating portion according to the present invention and a wound coil in which electric wires are aligned and wound on the bobbin to form a wound coil portion. is there.

FIG. 4 is a perspective view showing the stator in a state where the wound coil shown in FIG. 3 is assembled (inserted) together with a bobbin to a stator core.

FIG. 5 is an explanatory diagram showing locations where coating liquid is applied to a wound coil attached (inserted) to a stator core, and nozzle positions of an application device.

FIG. 6 is an explanatory diagram showing an initial drop position and a permeation flow of the fixing liquid when the fixing liquid is applied to the wound coil.

FIG. 7 is an explanatory diagram showing a second drop position and a permeation flow of the fixing liquid when the fixing liquid is applied to the wound coil.

FIG. 8 is an explanatory diagram showing a final drop position and a permeation flow of the fixing liquid when the fixing liquid is applied to the wound coil.

FIG. 9 shows a linear motion of the Y-axis moving table according to the present invention;
It is explanatory drawing which shows the principle of operation | movement which converts into rotation positioning operation | movement of a stator.

FIG. 10 is a configuration diagram showing an embodiment of a device configuration for performing the operation shown in FIG. 9;

FIG. 11 is a partial sectional perspective view showing one embodiment of the electric motor according to the present invention.

12 is a diagram for explaining a method of manufacturing the inner rotor type stator shown in FIG.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Base, 2 ... Y-axis moving table, 3 ... Support part, 4 ... Rotational positioning shaft, 5 ... Fixed guide pin part, 5a ... Fixed guide pin, 6 ... Stator, 7 ... Coating equipment, 7a ... Discharge nozzle Part, 8 ... fixed quantity application controller, 9 ... pressure vessel, 10
... air supply section, 11 ... stator core, 12 ... tooth section, 13 ...
Bobbin, 13a: bobbin outer peripheral side wall portion, 14: notch portion (injection portion), 14a: coating portion (injection portion), 15: wound coil portion (coil electric wire), 16: each slot connection line,
17: wound coil, 18a: initial application position, 18b: 2
Second application position, 18c: Last application position, 19a: Initial application nozzle position, 19b: Second application nozzle position, 19
c: final nozzle position, 20: flow of fixative liquid at the time of first application, 21 ... flow of fixative liquid at the time of second application, 21a ...
Fixing liquid flowing to the lower part of the electric wire, 22: Flow of fixing liquid at the last application, 23 ... Rotational positioning shaft development view, 24
a, 24b: guide taper portion, 25a, 25b: guide groove,
26a: fixed guide pin position when returning to the origin of the device, 26b ...
Fixed guide pin position to start 15 ° rotation, 26c ... 15
° Fixed guide pin position where rotation is completed, 26d ... Fixed guide pin position where 15 ° rotation (total 30 ° rotation) starts, 2
6e: fixed guide pin position after 15 ° rotation (total 30 ° rotation) is completed, 26f, 26g, 26h: fixed guide pin position at the time of application, 27: stator mounting jig part, 28: rotation fixed plunger, 30 ... Coating equipment body, 31: X-axis stage, 32: Column, 101: Inner rotor type stator (stator), 106: Core back part, 110: Rotor (rotor), 111: Shaft, 112, 113 ...
Holding member (end bracket), 114 ... outer frame, 115
…bearing.

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Yasuhiko Tajima 4-6 Kanda Surugadai, Chiyoda-ku, Tokyo Inside Hitachi, Ltd. (72) Inventor Takashi Watanabe 7-1-1, Higashi-Narashino, Narashino-shi, Chiba F-term in the Industrial Equipment Division of the Works (reference) 5H604 AA05 AA08 BB01 BB13 CC01 CC05 CC15 CC16 DA16 DB02 5H615 AA01 BB01 BB14 PP01 PP08 QQ02 RR07 SS05 SS18 SS24

Claims (12)

[Claims] An electric wire is wound around each of a plurality of tooth portions radially formed on a stator laminated iron core, and each of the bobbins having a wound coil portion is inserted thereinto. A stator configured by injecting a desired amount of a fixing liquid agent from an injection portion formed in the permeation portion and infiltrating the entire circumference of each wound coil portion, and curing the fixing liquid material to fix each wound coil portion, and An electric motor comprising: a rotor rotatably supported in the stator. 2. A bobbin formed by winding an electric wire to form a wound coil portion is inserted into each of a plurality of radially formed tooth portions of a stator laminated iron core, and an outer circumferential side of each bobbin is formed. A stator configured by injecting a desired amount of a fixing liquid agent from an injection portion formed in the permeation portion and infiltrating the entire circumference of each wound coil portion, and curing the fixing liquid material to fix each wound coil portion, and A rotor rotatably supported in the stator, an outer frame for supporting the outer periphery of the stator, a bearing having a bearing for rotatably supporting the rotor, and a holding member attached to the outer frame or the stator; An electric motor characterized by comprising: 3. A bobbin formed by winding an electric wire to form a wound coil portion is inserted into each of a plurality of tooth portions radially formed on the stator laminated iron core, and an outer peripheral side of each bobbin is formed. By injecting a desired amount of the fixing liquid agent from a plurality of locations along the rectangular long side of the wound coil portion through the injection portion formed in the wound portion, the fixing liquid agent permeates the entire circumference of each wound coil portion,
An electric motor comprising: a stator configured by fixing each wound coil portion by curing the fixing liquid agent; and a rotor rotatably supported in the stator. 4. A bobbin formed by winding an electric wire to form a wound coil portion is inserted into each of a plurality of radially formed tooth portions of the stator laminated iron core, and an outer peripheral side of each bobbin is formed. By injecting a desired amount of the fixing liquid agent from a plurality of locations along the rectangular long side of the wound coil portion through the injection portion formed in the wound portion, the fixing liquid agent permeates the entire circumference of each wound coil portion,
A stator configured by fixing each wound coil portion by curing the fixing liquid agent, a rotor rotatably supported in the stator, an outer frame supporting an outer periphery of the stator, and the rotor An electric motor comprising: a bearing rotatably supported; and a holding member attached to the outer frame or the stator. 5. The stator according to claim 1, further comprising a core back portion formed by laminating the outer periphery of the tooth portion of the stator laminated iron core. And electric motor. 6. A winding for inserting a wound coil having a wound coil portion formed by winding an electric wire around each bobbin on each of a plurality of tooth portions radially formed on a stator laminated iron core. A coil insertion step; and an injection portion formed on the outer peripheral side of each bobbin over a plurality of wound coils inserted into each of the plurality of tooth portions of the stator laminated iron core in the wound coil insertion step. A fixing liquid application step of injecting a desired amount of the fixing liquid through the entire periphery of each wound coil portion by injecting the desired amount of the fixing liquid, and applying the fixing liquid to the teeth of the stator laminated core in the fixing liquid applying step. A step of heating and fixing the fixing liquid applied over the plurality of wound coils inserted therein to obtain a stator, thereby obtaining a stator for an electric motor. 7. A winding in which an electric wire is wound around each bobbin to form a wound coil portion on each of a plurality of radially formed tooth portions of the stator laminated iron core. A coil insertion step; and an injection portion formed on the outer peripheral side of each bobbin over a plurality of wound coils inserted into each of the plurality of tooth portions of the stator laminated iron core in the wound coil insertion step. A fixing liquid application step of injecting a desired amount of the fixing liquid from a plurality of locations along the rectangular long side of each wound coil portion to allow the fixing liquid to permeate the entire circumference of each wound coil portion; And a curing step of heating and curing the fixing liquid applied over a plurality of wound coils inserted into the tooth portions of the stator laminated core in the fixing liquid applying step to obtain a stator. Of manufacturing a stator for an electric motor. 8. A winding for inserting a wound coil in which a wound coil portion is formed by winding an electric wire around each bobbin on each of a plurality of tooth portions radially formed on a stator laminated iron core. In the coil insertion step, the stator laminated core in which the plurality of wound coils are inserted in the wound coil insertion step is rotatably supported around an axis, and the stator laminated core is arranged around the axis. The winding coil is rotated in accordance with the pitch of the winding coil, and a plurality of winding coils along the rectangular long side of the winding coil portion are passed through the injection portion formed on the outer peripheral side of the bobbin with respect to the wound winding coil. A fixing liquid application step of injecting a desired amount of the fixing liquid from the location to penetrate the fixing liquid over the entire circumference of the wound coil part; and a plurality of fixing liquids inserted into the stator laminated iron core in the fixing liquid application. The adhesive liquid applied over the wound coil is heated and cured. Method of manufacturing an electric machine stator and having a curing step of obtaining a stator Te. 9. The method for manufacturing a stator for an electric motor according to claim 6, further comprising a fitting step of fitting a core back portion laminated on the outer periphery of the stator obtained in the curing step. A method for manufacturing a stator for an electric motor, comprising: 10. A method for manufacturing a stator for an electric motor, wherein the step of applying a fixing solution is performed using a discharge nozzle in the step of applying the fixing solution according to claim 6. 11. The fixing liquid agent application step according to claim 8, wherein the moving table for rotatably supporting the stator laminated iron core about the axis is reciprocated in the axial direction to thereby form the plurality of winding coils. A method for manufacturing a stator for an electric motor, characterized in that the inserted stator laminated iron core is rotated and stepped about the axis thereof in accordance with the pitch of the wound coil. 12. A support member for supporting a stator laminated iron core having a plurality of wound coils inserted therein so as to be rotatable about an axis, and a stator laminated iron core supported by the support member is disposed about the axis. Rotating step means for rotating and rotating the winding coil in accordance with the pitch of the winding coil, and winding the winding coil rotated and rotated by the rotating step means through an injection portion formed on the outer peripheral side of the bobbin. A fixing liquid applying means for injecting a desired amount of the fixing liquid from a plurality of locations along the rectangular long side of the coil portion so as to permeate the fixing liquid over the entire circumference of the wound coil portion; Fixing liquid application device.